Sweating at the back of the head at night can be caused by physiological factors, vitamin D deficiency, tuberculosis, congenital heart disease and other factors. 1. Physiological factors: for example, at night when sleeping, the room temperature is high, will lead to the back of the head sweating more, usually no other clinical manifestations, after improving the room temperature can return to normal. 2. Vitamin D deficiency: children’s body lack of vitamin D is too much, easy to make the body calcium deficiency, will be in the back of the head at night sweating, may also be accompanied by more than crying, sleep is not stable, and may even affect the normal development of the body. 3. Tuberculosis: For example, tuberculosis, usually caused by tuberculosis bacillus infection, can lead to sweating at the back of the head when the baby sleeps, which may also be accompanied by fatigue and weakness, emaciation, insomnia and other abnormal manifestations. 4. congenital heart disease: may be related to genetic and environmental factors, will lead to the baby in the back of the head sweating while sleeping, and also accompanied by feeding difficulties, rapid heartbeat, fatigue and other symptoms. Sweating at the back of the head at night, there may be other reasons, it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.